Heat Engines and IC Engine Components

The inlet manifold connects the intake system to the inlet valve and allows the air or air-fuel mixture to enter the cylinder.

Inlet valves regulate the entry of air-fuel mixture into the cylinder, while exhaust valves allow the combustion products to exit the cylinder.

The cylinder block serves as the main supporting structure for the engine components and houses the cylinders and other parts.

<p>The spark plug initiates the combustion process in Spark-Ignition (SI) engines.</p> Signup and view all the answers

<p>The piston is a cylindrical component that fits snugly in the cylinder, forming a gas-tight space for combustion and transmitting gas forces to the output shaft.</p> Signup and view all the answers

<p>The combustion chamber is the space enclosed by the cylinder head and the piston top during combustion, located at the upper part of the cylinder.</p> Signup and view all the answers

<p>The connecting rod transmits gas forces from the piston to the crankshaft.</p> Signup and view all the answers

<p>The cylinder is a vessel where the piston moves, allowing for varying volumes that interact with working fluids under different thermodynamic conditions.</p> Signup and view all the answers

<p>The crankshaft converts the reciprocating motion of the piston into useful rotary motion for the output shaft.</p> Signup and view all the answers

<p>Piston rings are fitted around the piston to create a gas-tight seal, preventing gas leakage and facilitating efficient combustion.</p> Signup and view all the answers

<p>Piston rings provide a tight seal between the piston and cylinder wall, preventing leakage of combustion gases.</p> Signup and view all the answers

<p>The camshaft controls the opening and closing of the intake and exhaust valves at the correct timing.</p> Signup and view all the answers

<p>The cylinder head closes the cylinder at the top, houses the combustion chamber, and contains components that manage the flow of air and fuel.</p> Signup and view all the answers

<p>The cylinder block supports and houses the engine components, while the cylinder is the space in which the piston moves to facilitate combustion.</p> Signup and view all the answers

<p>The gudgeon pin links the small end of the connecting rod to the piston.</p> Signup and view all the answers

<p>Water jackets or cooling fins help dissipate heat from the engine components to prevent overheating during operation.</p> Signup and view all the answers

<p>The flywheel serves to provide a uniform torque to the crankshaft by smoothing out fluctuations in angular velocity during engine operation.</p> Signup and view all the answers

<p>A carburetor mixes air and petrol in the proper ratio to ensure efficient combustion in a petrol engine.</p> Signup and view all the answers

<p>The fuel pump increases pressure and controls the quantity of fuel supplied to the injector in a diesel engine.</p> Signup and view all the answers

<p>Cylinder bore is the nominal inner diameter of the working cylinder, designated by the letter 'd' and usually expressed in millimeters (mm).</p> Signup and view all the answers

<p>The stroke is the linear distance the piston travels from one end of the cylinder to the other, usually expressed in millimeters (mm).</p> Signup and view all the answers

<p>The stroke to bore ratio (L/d) classifies engines as under-square, square, or over-square, influencing engine performance and efficiency.</p> Signup and view all the answers

<p>Clearance volume (Vc) is the volume between the piston top and cylinder head when the piston is at top dead center.</p> Signup and view all the answers

<p>The compression ratio (r) is defined as the ratio of total cylinder volume to clearance volume.</p> Signup and view all the answers